47240539 has 2 divisors, whose sum is σ = 47240540. Its totient is φ = 47240538.

The previous prime is 47240537. The next prime is 47240573. The reversal of 47240539 is 93504274.

It is an a-pointer prime, because the next prime (47240573) can be obtained adding 47240539 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47240539 - 2¹ = 47240537 is a prime.

Together with 47240537, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (47240537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23620269 + 23620270.

It is an arithmetic number, because the mean of its divisors is an integer number (23620270).

Almost surely, 2^47240539 is an apocalyptic number.

47240539 is a deficient number, since it is larger than the sum of its proper divisors (1).

47240539 is an equidigital number, since it uses as much as digits as its factorization.

47240539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 47240539 is about 6873.1753214944. The cubic root of 47240539 is about 361.4972085384.

The spelling of 47240539 in words is "forty-seven million, two hundred forty thousand, five hundred thirty-nine".